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STEAM TRAP. No. 509,202. Patented Nov. 21,1893.

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No. 509,202. Patented Nov. 21, 1893.

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H. GREAMER. STEAM TRAP.

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UNITED STATES IPATENT OFFICE.

HENRY CREAMER, OF NEW YORK, N. Y.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 509,202, dated November21, 1893.

Application filed June 30,1893.

To @ZZ whom it may concern.: Y

Be it known that I, HENRY CEEAMEE, of the city, county, and State of NewYork, have invented a new and Improved Steam-Trap, of which thefollowing is a full, clear, and exact description.

The invention relates to steam traps for automatically conducting waterof condensation from engines, steam heating systems, &c., back into theboiler.

The object of the invention is to provide a new and improved steam trap,which is simple and durable in construction, very eiective and automaticin operation, and arranged to facilitate the conducting of water ofcondensation from engines, steam heating systems, and the like, backinto the boiler.

The invention consists principally of a receiver for receiving watervofcondensation, and connected by a port with a fixed neck held on thecylinder and containing an inlet valve adapted to open on the downstroke of the pump piston to admit the water to the same, and adischarge valve for discharging the water from the said piston.

The invention also consists4 of certain parts and details, andcombinations of the same, as will be hereinafter described and thenpointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the gures.

Figure l is a sectional side elevation of the improvement. Fig. 2 is a plan view of the same. Fig. 3 is a sectional plan view of the same on theline 3 3 of Fig. l. Fig. 4 is an enlarged face view of the valvecontrolling the inlet and exhaust of the steam to the cylinder, partsbeing in section on theline 4-4 in Fig. 2; and Fig. 5 is a verticalsection of part of the improvement on the line 5 5 of Fig. 1. Fig. 6 isa side view of the trap. Y

The improved steam trap is'provided with a cylinder A, closed at itslower end by a head A', and at its upper end by a head B, from whichprojects downward into the cylinder a neck B', carrying at its lower enda permanent piston B2, engaging the interior of a piston C, mounted toreciprocate within the cylinder A. This piston C is actuated in themanner fully shown and described in my Serial No. 479,199. (No model.)

Letters Patent No. 457,983. That is to say, in a box on the head of thecylinder, is arranged a rock-shaft, having an arm connected by a rodwith the collar of the piston, C.

In the head B is formed a port a, which connects the interior of theneck B with a receiver D, provided in its cover D with a pipe E, throughwhich the water of condensation from the engine, steam heatingapparatus, &c., can pass into the said receiver. The lower end of thefixed piston B2 on the neck B is provided with a cap plate B3, formedwith a central aperture B4 leading toa space B5, formed in the lower endof the neck B', the said cap plate supporting the lower end of a springF, supporting on its Lipper end an inlet valve G, adapted to open andclose apertures H formed in a valve seat H, arranged within the hollowneck B', the said seat H being secured by bolts to arms projecting fromthe lower end of a discharge or outlet pipe B6, extending centrallywithin the neck B and depending from the head B, as will be readilyunderstood by reference to Figs. l and 5. The seat H is provided with adownwardly extending tubular cage H3 which forms the guide for the valveG.

The upper end of the pipe B6 connects with a channel b arranged withinthe head B, and leading to a recess A2 formed on the cylinder A, andconnected by a pipe Jwith the boiler so as to return the water thereto.The lower end B"l of the discharge pipe B6 is preferably made spherical,as shown in Fig. l, and in it projects a seat H2 in alignment with thecage H3 and formed on the'top of the fixed valve seat H. On this seat H2is fitted a check valve I, the upward motion of which is limited by asuitable stop BS, arranged within the lowerl end B7 of the pipe B6. Thespring F is sufciently strong to hold the inlet valve G to the underside of the seat H, and the check valve I is normally seated on -itsseat H2 by its own weight. vNow,when the piston C is on its downwardstroke, the water of condensation in the receiver D passes through theport a into the neck B and through the apertures H past the now openinlet valve G, to flow through the cage HS'centrally into the chamberB5, and through the opening. B4 into the lower closed part of the pistonO. When the piston C is on the up stroke the valve G closes IOC and theWater contained in the piston is forced upward into and through thehollow valve seat H past the now open check valve I to flow into thedischarge pipe Bs and from the latter through the channel b and recessA2 into the pipe J, to be returned to the boiler.

It is understood that when the piston C isV on the down stroke thesuction within the same causes the opening of the inlet valve G and theseating of the discharge valve I, and on the return or upward stroke ofthe said piston, the valve G returns to its seat by the action of thespring F and the pressure of water within the chamber B5, while theother valve I opens to permit the water to pass through the pipe B6,channel h, recess A2and pipe J to the boiler.

Within the receiver D is arranged a float K, made in the form of acup-shaped vessel open at the top and adapted to be filled with thewater of condensation flowing into the said receiver D. The float K isguided on a pin K', erected within the receiver D, as plainly shown inFig. 1, and the said float is also provided with an upwardlyextendingarm K2, pivotally-connected with a horizontally-disposed lever KS,fulcrumed on the under side of the cover D of the said receiver D. Theother end of the said lever K3 is pivotallyconnected with a valve stemL, extending upwardly through the cover D and the short pipe D2, andcarrying at its upper end a piston valve N, arranged within a cylinderO, provided with a steam inlet pipe P connected with a suitable sourceof steam supply, and with-an outlet pipe P leading to a valve Q,arranged within a casing R supported on top of the cover D. The lowerend of the valve stem L is provided with a weight L', formed in itsunder side withabore iitted to slide on a fixed pin L2, erected withinthe receiver D, so that the said rod L is properly guided in its up anddown movement. The valve Q referredto and shown in detail in Fig. 4 isin the main, part of the construction described in the Letters Patentabove referred to, so that further description of the saine in all itsdetail parts is not deemed necessary. The valve Q serves to alternatelyadmit steam to the cylinder A at its upper and lower ends. However, thesaid valve has its connected pistons S and S steam cushioned, for whichpurpose I employ the auxiliary piston valves T and T respectively,arranged in the ports'c and d respectively, through which passes steamtothe outer ends of the casing R, to move the pistons inwardly. Twoports e, f and e', f lead from the said ports c and dto the ends of thecylinder so that when steam is admitted, say to the port c, then itscorresponding valve T is forced outward to permit steam to pass throughthe port f to the outer end of the cylinder to force the piston S inwarduntil the said piston has uncovered the other port e, so that a fullsupply of steam is admitted to this end of the cylinder to move thepiston Svinward. When the said piston S moves outward, then steam canescape through the port e into the port c now connected with the exhaustport, so as to exhaust part of the cylinder at this end, that is, untilthe piston S on its outward stroke, closes the said port e. The steamthen passes through the other port f to exert a pressure on the valve Tso as to seat the same to prevent a further escape of the steam, wherebypart of the steam is trapped within this end of the cylinder to cushionthepiston S. The same operation takes place in the other end of thecylinder relative to the piston S', valve T', and ports d, e and f.

The operation is as follows: The water of condensation is received inthe receiver D through the pipe above the pumping part of the trap. Thewater accumulating in the said receiver and the neck B connected withthe receiver by the port a, also fills the oat K, so that when thepiston C moves downward, as above described, to drain the Water from theneck B and receiver D, then the float K by being weighted with the watermoves downward to cause an upward movement of the weighted stem L,whereby the valve N is shifted and the supply of steam is cut off fromthe valve Q. As soon as the supply of steam is shut off the pump willremain at a standstill until the receiver D again begins to fill withwater, and as soon as it reaches the height of the inverted cup-shapedloatK then the latter will rise, owing to the preponderance of theweight L on the rod L, so that the valve N is again moved back to itsposition shown in Fig. l, to permit live steam to iiow from the pipe Ppast the said valve into the outlet pipe P connected with the valve toagain start up the pump, whereby the piston Opis caused to move upwardto discharge the water as above described. The above described operationis then again repeated, that is, the Valve N shuts off the supply whenthe float moves downward at the time water is lowered in the receiver bythe action of the upward stroke of the piston C. It will be seen that bythis arrangement, the water is automatically conducted back into theboiler and the pump is stopped and started according to the amount ofwater of condensation received within the receiver D from the steamheating system, engine or other device. It will be further seen, thatthe action of the pistons S and S of the valve Q is comparativelynoiseless as the said pistons are steam cushioned. A pipe U leads fromthe receiver D to connect with the heating system so as to allow steamthat may be in the receiver to low back into the system.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. A steam trap,l comprising a receiveradapted to receive the waterof condensation, a cylinder having a neckprojecting from the top head of the cylinder into the latter, the saidhead being provided with a port connect- IOO IIO

ing the neck with the said receiver the hollow pumping piston, an inletvalve adapted to open on the down stroke of the pumping piston to admitthe water to the same, and a discharge valve for discharging the waterfrom the said piston, substantially as shown and described.

2. A steam trap, provided with a cylinder having a hollow neck extendingtherein to a discharge valve and an inlet valve, both arranged withinthe said neck and the hollow piston and its discharge pipe,substantially as shown and described.

3. A steam trap, comprising a cylinder having a neck projecting downwardfrom the top head of the cylinder, and formed at its lower end with afixed piston, a hollow reciprocating piston within the said cylinder andengaging the said fixed piston, an inlet valve arranged within the saidneck, and an outlet valve arranged within the said neck and discharginginto an outlet pipe, substantially as shown and described.

4. A steam trap, comprising a cylinder havinga fixed hollow neckprovided with a fixed piston, a reciprocating hollow piston within thesaid cylinder and engaging the said fixed piston, a receiver connectedby a port with the said'hollow neck, an inlet valve within the saidneck, and a discharge valve within the said neck and connected with adischarge pipe, substantially as shown and described.

5. A steam trap, comprising a receiver con-v nected by a port with thepump mechanism, a Iioat which is hollowand cup-shaped, and arrangedwithin the said receiver and thus adapted to be filled with water tocause it to act by its gravity thereby augmented, and a valvecontrolling the steam for-actuating the pumping mechanism, the saidvalve being connected with the said iicat, substantially as shown anddescribed.

6. A steam trap comprising a neck connected with the water receiver andwith the hollow piston, a discharge pipe arranged within the said neckand connected with thel pipe leadingA to the boiler, a Valve seatattached to the said pipe within the said neck, a disk valve held on thesaid valve seat and pressed in contact therewith by a spring within thesaid neck, and a check valve seated on a central opening of the saidseat and adapted to open into the said discharge pipe, substantiallyvasshown and described.

HENRY CREAMER.

Witnesses:

THEO. G. HosrER, C. SEDGWICK.

